ASTROSAT CZTI

Data Quality Report

Orbit 31637

Creation date: 2024-06-27T20:31:01.127690
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T04_035T01_9000004622_31637cztM0_level2.evt modeM0/AS1T04_035T01_9000004622_31637cztM0_level2_quad_clean.evt
Size (bytes)903,075,840112,455,360
Size861.2 MB 107.2 MB
Events in quadrant A4,849,041741,099
Events in quadrant B7,600,362732,078
Events in quadrant C7,088,348699,422
Events in quadrant D7,235,919638,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201642
B0285332
C0268972
D0276162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85473544.141804%
B85464905.733677%
C85464805.616663%
D854692610.835479%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 10207 8549 165 165 1.62% 1.93%
B 10206 8548 211 211 2.07% 2.47%
C 10206 8548 44 44 0.43% 0.51%
D 10206 8548 798 798 7.82% 9.34%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 760551 3638.44 1042 1019 208.8
A 12 96 27936 128.94 1042 1019 208.8
A 0 13 22698 103.85 1042 1019 208.8
B 6 159 2384306 12140.62 1032 1004 196.3
B 10 245 703381 3577.93 1032 1004 196.3
B 5 172 185530 939.98 1032 1004 196.3
C 3 233 2872152 12158.38 999 1004 236.1
C 14 238 165018 694.55 999 1004 236.1
C 0 10 61528 256.3 999 1004 236.1
D 13 249 2080619 8913.57 973 946 233.3
D 8 195 1128231 4831.59 973 946 233.3
D 11 176 130610 555.75 973 946 233.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter